Feature two advance curve families that are adjustable to accommodate stock and modified enginesSelectable multi-spark mode for quick starting and smooth cruisingUnit has four rotary switches for timing adjustments, single/dual ignition mode and rpm limit (100 rpm steps)Coil outputs protected against short circuitsRequires coils with a minimum of 3 ohms resistance and low resistance spiral-core-type plug wiresUses the tachometer wire for the PC-link and comes with a connectorOptional USB interface and software available for programming custom curves (programs available on web site www.daytona-twintec.com/index.html)12V power adapter is used to power up the ignition system when removed from the bike and for installing new maps (sold separately)Made in the U.S.A.NOTE: California A.R.B. E.O. No. D-641-1.